Rep. Adam Kinzinger, an Air Force Reserve captain and fighter pilot, believes one or both of the pilots aboard missing Malaysian Airlines Flight 370 turned kamikaze and crashed the jet in a suicide mission.
"I still think the most valid theory is probably the simplest, which is, you had a pilot or two pilots but probably one for whatever reason that decided to do this," the Illinois Republican told "The Steve Malzberg Show" on Newsmax TV.
"There was an incident pretty recently where a pilot had actually gone crazy on an American jet. He went out to use the bathroom and the co-pilot actually stood up and locked the door and locked the pilot out.
"So you think about a situation where a pilot goes up to use the restroom and that's the opportunity for whoever the bad pilot is to lock the door."
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Kinzinger, who is Deputy Republican Whip, said the more time that passes without a solution to the jet mystery, the tougher it will be to solve.
"Every day that goes by, I get more worried that we're just simply not going to get answers to this," he said.
"At one point, the area they were looking at was the size of basically the continental United States."
And despite the sophisticated radar and satellite equipment being used in the search, finding the plane is not an easy task.
"This is the equivalent of dropping the needle on your carpet, somewhere on your carpet and then taking a soda straw and looking through that soda straw and trying to find a needle in the carpet and then multiply that by five even," Kinzinger said.
"They're up against the badness of the weather, the roughness of the ocean, the speeding currents, and the fact that again this stuff sinks.
"We'd hope that life preservers or seat cushions and stuff would stay afloat, and they probably will, but it's all spreading out in a huge way. It's not easy to see a seat cushion floating in the ocean."
If the one or both of the pilots did turn bad, it would have been tough for any of the crew or passengers to intervene, he added.
"After 9/11, you got these hardened doors, the cockpit doors. Now, remember, before 9/11, pilots flew with the door open, you could up and talk to them and everything," Kinzinger said.
"They got those hardened doors … good for keeping bad people out of the cockpit, but it's also bad for keeping bad people in the cockpit."
"What's likely at the end of the day is this may be a pilot that just decided he wanted to die and take, unfortunately, a couple of hundred people with him."
Kinzinger discounts the theory that the jet has landed on a remote airstrip.
"I would have thought that if that was the case, maybe a ransom note or something would've come forward by now," he said.
"[And] think about the fact that to build an airstrip that a 777 can land … would totally be seen by satellites.
"Or, if it's a pre-existing airport, the idea that Boeing 777 can land and be hidden and nobody say anything — it's almost into the September 11th … conspiracy theories."
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